Cozun is a veteran squadron in Ramba Ral's squadron and one of Ral's wingmen along with Acous. He pilots a MS-06J Zaku II Ground Type and usually accompanies Ramba Ral in battle. Although he does well in his first battle against White Base, Cozun is cornered by the Guncannon (piloted by Amuro) while retreating from a later battle, and is taken prisoner. He easily breaks out using an exploding tooth, and manages to send classified information on White Base to Ramba Ral. While attempting to escape, Cozun is killed when Omur foolishly uses a bazooka to open a door between them.